/Engine/Source/Editor/CurveEditor/Public/CurveEditor.h
Called bySCurveEditorPanelto determine where to draw grid lines along the X-axis. This allows synchronization with an external data source (such as Sequencer's Timeline ticker). A similar function for the Y grid lines is not provided due to the Curve Editor's ability to have multiple views with repeated gridlines and values.
virtual void GetGridLinesX ( [TArray](API\Runtime\Core\Containers\TArray)< float > & MajorGridLines, [TArray](API\Runtime\Core\Containers\TArray)< float > & MinorGridLines, [TArray](API\Runtime\Core\Containers\TArray)< [FText](API\Runtime\Core\Internationalization\FText) > * MajorGridLabels ) const